Cluster lamp-socket



E. G. SCHATTLE.

CLUSTER LAMP SOCKET.

APPLICATION FILED JULY 29. m9.

1 85,844. Patentd July 26, 1921.

7: Inventor.

UNITED STATES PATENT OFFICE.

EDWARD G. SCHATTLE, OF AUBURN, NEW YORK.

CLUSTER LAMP-SOCKET.

Application filed July 29, 1919. Serial No. 314,094.

T 0 (IN whom it may concern:

Be it known that I, EDWARD G. SCHATTLE, a citizen of the United Statesof America, and resident of the city of Auburn, State of New York,United States of America, have invented certain new and usefulImprovements in Cluster Lamp-Sockets, described in the followingspecification and illustrated in the accompanying drawings, that formpart of the same.

The principal objects of this invention are to simplify the constructionof lamp sockets of the cluster type so as to minimize the cost ofconstruction and to produce a compact and rigid device which will bevery easy to assemble and will maintain secure electrical contacts.

The principal feature of the invention consists in the novelconstruction of a molded composition body and of the several electricalconnections whereby the molding of the composition body is accomplishedwith the simplest form of mold and the assembling is greatlyfacilitated.

In the drawings. Figure 1 is a mid-sectiona] elevational view throughthe double socket structure.

Fig. 2 is a central transverse longitudinal section.

Fig. 3 is a perspective view of the molded member showing the plugmember assembled and ready for insertion.

The body member 1 is formed of a suitable molding composition such asbakelite and is a unitary structure formed with the acute angularlydisposed socket portions 2 and a recess 3 extending downwardly from thetop. Holes 4 connect the recess 3 with the interior of the socketportions 2 at the inward side.

A member 5 formed of brass plate and cut in a substantially invertedV-shape is preferably molded into the bakelite, though it may beassembled into the molded member if desired. This member is formed witha right angularly bent lug 6 at the apex and lugs 7 at the extremities.Each of these lugs have threaded holes through the center. If the member5 is molded into the bakelite it is supported in the mold by pinssecured in the mold and extending into the holes in the lugs which arecentrally located in relation to the top and ocket portions of the body.

The plug shell 8 has secured to its inner side at the bottom end a flatmetal strip 9,

the free end of which is formed with a pair of right angularly bent lugs10, which are arranged at an obtuse angle in relation to each other andare formed with threaded holes, which when the member is inserted inplace, register centrally with the holes 4 in the bakelite body.

The plug center is herein shown formed of two cylindrical-shaped blocks11 and 12. The outer block 11 engages the flange of the plug shell 8 andextends above the same in the ordinary manner. The block 12 is formedwith a flange 13 which abuts the top of the body and engages the bottomedge of the plug shell. The block 12 is formed with a reces 12' throughwhich the member 9 is inserted and the lug end thereof extends into therecess 3 and is shaped so as to pass the lugs 6 of the member 5. Thecenter plug contact screw 14 passes through the plug members and issecured in the threaded hole in the lug 6.

The socket shells 15 are inserted into the socket portions 2 and screws16 are inserted through holes in the inner end flanges of the shells 15and engage the threaded holel in the lugs 10 of the plug strip 9.

Insulating washers 18 are then inserted in the shells to cover thescrews 16 and these are held in place by the screws 19 which extendthrough the holes 20 in the bakelite and are threaded into the lug ends7 of the mem- It will be seen from this description that the variousparts are of the very simplest construction and they can be assembledvery rapidly. The use of the double plug block is not essential thoughimportant as it renders it very easy of assembly and gives an extralength to the plug portion which will fit any socket.

What I claim as my invention is 1. A cluster lamp socket, comprising, aunitary molded body portion formed with a plurality of socket openingsconnecting at the inner ends with a recess opening through the top, aunita metal member-arranged in said recess having branch arms extendingto each of said sockets, a threaded plug shell having a connectionmember rigidly secured thereto and extending into the recess in saidbody, socket shells arranged in said socket recesses and rigidlyconnected to the member secured to said plug shell, a plug arranged insaid plug hell recessed to receive thev plug shell connection, anelectrical conthe extremities of the arms of the unitary member.

2. A cluster lamp socket, comprising, a unitary molded body having aplurality of socket recesses and a central recess opening from the topand communicating with said recesses, a V-shaped metal member havinglaterally turned lug at the apex and at the ends, said lugs havingthreaded holes, said member being molded rigidly in said molded bodywith the holes centralized in relation to the recesses, a plug shellhaving a fiat metal strip rigidly secured to its interior and projectingtherefrom and having a pair of lugs at the free end formed with threadedholes, said member being adapted to extend into the recess in the body,plug blocks suppoi-tin said shell, a central contact screw extendingthrough said plug blocks and secured to the top lug of the V member,central contacts connected to the end lugs of the V member, socketshells arranged in the socket recesses, and screws connecting the socketshells with the end lugs of the plug shell extension.

EDWARD G. SCHATTLE.

